Door stop



R. E. BACON April 21, 1959 DOOR STOP Filed Dec.

Q lllllllllll"llllllllllllllllllllllllll mun INVENTOR.

ROBERT E. BACON W Z TTORNEY United States Patent DOOR STOP Robert E. Bacon, Fort Wayne, Ind.

Application December 24, 1956, Serial No. 630,371

3 Claims. (CI. 1685) This invention relates to a door stop and more particularly to a door stop having a mounting means which can be used with all wood, plaster and dry wall construction having hollow walls.

A primary object of this invention is the provision of a base mounting member for a door stop which can be mounted in a drilled hole in a baseboard and anchored thereto by a bolt and toggle nut.

Another object of this invention is to provide a resilient member adapted to be mounted on a wall which will cushion the door if it is moved to such open position with a greater momentum than is desired.

A further object of this invention is the provision of a thermoplastic base member for a door stop wherein the anchoring bolt may be molded.

With the foregoing objects in view, together with such other objects and advantages as may subsequently appear, the invention resides in the parts and in the combination, construction and arrangement of parts hereinafter described and claimed, and illustrated by way of example in the accompanying drawing, in which Figure 1 is a side elevation with parts in section showing the door stop being mounted on a wall;

Figure 2 is a side elevation of the door stop mounted on a wall;

Figure 3 is a sectional view of the toggle nut with the wings in the expanded position;

Figure 4 is a detail sectional view taken along the line 4-4 in Figure 1.

In order to understand clearly the nature of the invention, and the best means for carrying it out, reference may now be had to the drawing, in which like numerals denote similar parts throughout the several views.

The numeral 11 designates a base member comprising an angular portion 13 forming a shoulder or support 15 and provided with an axial portion or projection 17 having a substantially smaller diameter than the portion 13. The face portion of the base member is provided with a protuberance 19 having a bore 21 for receiving a coiled spring 23 provided with a buffer cap 25 mounted on the free end. The base member is preferably made from a thermo-plastic setting material such as polyethylene or styrene.

. A threaded bolt 27 is provided with spaced axial ribs 29 to prevent the bolt from turning in the base member when molded or secured therein. The bolt may be mounted in the base member by heating the portion 17 until itbecomes soft and pressing the end of the bolt therein. The plastic material will form around the ribs 29 and securely connect the bolt thereto.

The numeral 31 designates a toggle nut provided with trunnions 33 on opposite sides and provided with a threaded portion corresponding to the threads on bolt 27. A pair of wings 35 and 37 are coaxially pivoted on the trunnions 33 so that the wings may be folded down as shown in Figure 1 or in an unfolded position as shown in Figures 2 and 3. The wings are preferably U-shaped 2,882,547 Patented Apr. 21,, 1 -9 in cross section and adapted to receive a spring 39 having ends 41 which will bear against the underside of the wings so that under normal conditions the wings are unfolded to the positions shown in Figures 2 and 3. The parts of the toggle nut 31 are constructed similar to the parts shown in the patent to Zilferer, No. 1,228,512, dated June 5, 1917; namely, the trunnions 33 are similar to Zitferer trunnions 6; wings 35 and 37 are similar to Zitferer Wings 7 and 8; and the spring 39 is similar to Zitferer spring 17.

To mount the door stop on a wall 43, a hole 44 is drilled therein having a diameter slightly larger than the axial projection 17. The toggle nut is mounted on the bolt 27 with the wings 35 and 37 folded down against the tension of the spring 39 and inserted into the opening 44 in the wall 43. As soon as the wings have passed through the opening 44, they will spring open to bear against the inner wall surface 45, whereafter the stop is tightened against the wall. It should be noted that only the outer ends of the wings contact the inner surface of the wall which are spaced away from the drilled hole 44. The ends of the wings together with the axial projection 17 disposed in the opening 44 provide a very stable support for the base mounting 11.

In view of the foregoing description taken in conjunction with the accompanying drawing, it is believed that a clear understanding of the device will be quite appar cut to those skilled in this art. A more detailed description is accordingly deemed unnecessary.

It is to be understood, however, that even though there is herein shown and described a preferred embodiment of the invention, the same is susceptible to certain changes fully comprehended by the spirit of the invention as herein described and the scope of the appended claims.

What I claim to be new and desire to protect by Letters Patent of the United States is:

l. A door stop comprising a base mounting having a resilient member attached thereto and extending therefrom, said resilient member provided with a cap at one end, said mounting having a radial shoulder defining an axial projection substantially smaller in diameter and extending therefrom, a threaded member having ribs at one end secured integrally within said projection, said projection adapted to be received in an opening in a wall for mounting the stop thereon, and a toggle nut mounted on the threaded member for anchoring said stop in position on a wall.

2; A door stop comprising a base member having a radial shoulder portion substantially intermediate its ends and provided with an axial projection adapted for cooperation with an opening in a wall for mounting the base member thereon, a threaded bolt having a ribbed section to prevent turning of the bolt secured within the axial projection, a nut threaded on the bolt and movable relatively longitudinally of the bolt, a pair of wings pivoted co'axially of each other upon said nut, spring means for causing the wings to be swung laterally with respect to each other into anchoring position to engage the inner face of the wall after insertion through the opening in the wall, and a coiled spring having a buffer cap at one end operatively connected to the base.

3. A door step comprising a base member having a radial shoulder portion intermediate its ends, said base member having an axial support portion substantially smaller in diameter than the shoulder and adapted for cooperation with an opening in a wall for mounting the base member thereon, a threaded bolt having one end secured within the support portion, a toggle nut having a pair of wings pivoted thereon and spring means for Wndering the wings efiective for anchoring the stop therein, said base member provided with a bore on its against saidwall after insertion through the opening References Cited in the file of this patent UNITED STATES PATENTS outer face portion for receiving a coil spring having a 1,228,512 Zifierer June 5, 1917 bufler cap secured to the free end thereof. 1,232,000 Chase a y 1917 2,767,421 Fremstad Oct. 23, 1956 FOREIGN PATENTS 468,673 Canada Oct. 10, 1950 

